Third Lake, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms then Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Third Lake, IL in one place.
Showers and thunderstorms before 11am, then showers and thunderstorms likely. Some of the storms could produce heavy rain. Cloudy. High near 75, with temperatures falling to around 72 in the afternoon. East southeast wind 10 to 15 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Local Weather Overview
This forecast page for Third Lake, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 18, 2026 5:21 PM CDT.
The active forecast window currently covers Sep 19 to Sep 24, 2026 for Third Lake, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 19 to Sep 24, 2026
- Latest sync
- Sep 18, 2026 5:21 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Third Lake
Saturday looks like the warmest upcoming period in Third Lake at 75 degrees F.
Monday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Sunday at about 10 to 20 mph NE.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 18, 2026 5:21 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 10pm, then showers and thunderstorms. Cloudy, with a low around 62. East northeast wind 5 to 10 mph. Chance of precipitation is 80%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 67. Northeast wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
A chance of rain showers. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
A chance of rain showers. Cloudy, with a high near 64.
A chance of rain showers. Mostly cloudy, with a low around 51.
A slight chance of rain showers. Mostly cloudy, with a high near 62.
A slight chance of rain showers before 7pm. Mostly cloudy, with a low around 51.
Partly sunny, with a high near 64.
Mostly cloudy, with a low around 51.
Partly sunny, with a high near 66.
Mostly cloudy, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Sep 19
|
Showers And Thunderstorms then Showers And Thunderstorms Likely
|
75°F |
10 to 15 mph
ESE
|
|
Saturday Night
Sep 19
|
Showers And Thunderstorms Likely then Showers And Thunderstorms
|
62°F |
5 to 10 mph
ENE
|
|
Sunday
Sep 20
|
Showers And Thunderstorms Likely
|
67°F |
10 to 20 mph
NE
|
|
Sunday Night
Sep 20
|
Chance Rain Showers
|
54°F |
15 mph
NE
|
|
Monday
Sep 21
|
Chance Rain Showers
|
64°F |
15 mph
ENE
|
|
Monday Night
Sep 21
|
Chance Rain Showers
|
51°F |
10 to 15 mph
ENE
|
|
Tuesday
Sep 22
|
Slight Chance Rain Showers
|
62°F |
10 to 15 mph
NE
|
|
Tuesday Night
Sep 22
|
Slight Chance Rain Showers then Mostly Cloudy
|
51°F |
5 to 10 mph
NE
|
|
Wednesday
Sep 23
|
Partly Sunny
|
64°F |
5 to 10 mph
NE
|
|
Wednesday Night
Sep 23
|
Mostly Cloudy
|
51°F |
0 to 5 mph
NNE
|
|
Thursday
Sep 24
|
Partly Sunny
|
66°F |
0 to 5 mph
NNE
|
|
Thursday Night
Sep 24
|
Mostly Cloudy
|
52°F |
0 to 5 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Third Lake.